1 files changed, 12 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemanticsOptions.java b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemanticsOptions.java
index 6ce4801f8a..3fd24c45fd 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemanticsOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkSemanticsOptions.java
@@ -96,4 +96,16 @@ public class SkylarkSemanticsOptions extends OptionsBase implements Serializable
             + "(outside a function definition)"
   )
   public boolean incompatibleDisallowToplevelIfStatement;
+
+  @Option(
+    name = "incompatible_comprehension_variables_do_not_leak",
+    defaultValue = "false",
+    category = "incompatible changes",
+    help =
+        "If set to true, loop variables in a comprehension shadow any existing variable by "
+            + "the same name. If the existing variable was declared in the same scope that "
+            + "contains the comprehension, then it also becomes inaccessible after the "
+            + " comprehension executes."
+  )
+  public boolean incompatibleComprehensionVariablesDoNotLeak;
 }